Create NotNull rule

docs/03-rules.md

@@ -14,6 +14,7 @@
 - [Count](03-rules_count.md)
 - [IsNull](03-rules_is-null.md)
 - [NotBlank](03-rules_not-blank.md)
+- [NotNull](03-rules_not-null.md)
 - [Type](03-rules_type.md)
 
 ## String Rules

docs/03-rules_is-null.md

@@ -2,6 +2,8 @@
 
 Validates that a value is `null`.
 
+Check the [NotNull](03-rules_not-null.md) rule for the opposite validation.
+
 ```php
 IsNull(
     ?string $message = null

docs/03-rules_not-null.md

@@ -0,0 +1,36 @@
+# NotNull
+
+Validates that a value is not `null`.
+
+Check the [IsNull](03-rules_is-null.md) rule for the opposite validation.
+
+```php
+NotNull(
+    ?string $message = null
+);
+```
+
+## Basic Usage
+
+```php
+// anything else will be true
+Validator::notNull()->validate(null); // false
+```
+
+## Options
+
+### `message`
+
+type: `?string` default: `The {{ name }} value should not be null.`
+
+Message that will be shown if the value is not null.
+
+The following parameters are available:
+
+| Parameter     | Description               |
+|---------------|---------------------------|
+| `{{ name }}`  | Name of the invalid value |
+
+## Changelog
+
+- `1.3.0` Created

src/ChainedValidatorInterface.php

@@ -121,6 +121,10 @@ public function notBlank(
         ?string $message = null
     ): ChainedValidatorInterface&Validator;
 
+    public function notNull(
+        ?string $message = null
+    ): ChainedValidatorInterface&Validator;
+
     public function optional(
         Validator $validator
     ): ChainedValidatorInterface&Validator;

src/Exception/NotNullException.php

@@ -0,0 +1,5 @@
+<?php
+
+namespace ProgrammatorDev\Validator\Exception;
+
+class NotNullException extends ValidationException {}

src/Rule/NotNull.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace ProgrammatorDev\Validator\Rule;
+
+use ProgrammatorDev\Validator\Exception\NotNullException;
+use ProgrammatorDev\Validator\Validator;
+
+class NotNull extends AbstractRule implements RuleInterface
+{
+    private string $message = 'The {{ name }} value should not be null.';
+
+    public function __construct(
+        ?string $message = null
+    )
+    {
+        $this->message = $message ?? $this->message;
+    }
+
+    public function assert(mixed $value, ?string $name = null): void
+    {
+        if (Validator::isNull()->validate($value) === true) {
+            throw new NotNullException(
+                message: $this->message,
+                parameters: [
+                    'name' => $name
+                ]
+            );
+        }
+    }
+}

src/StaticValidatorInterface.php

@@ -120,6 +120,10 @@ public static function notBlank(
         ?string $message = null
     ): ChainedValidatorInterface&Validator;
 
+    public static function notNull(
+        ?string $message = null
+    ): ChainedValidatorInterface&Validator;
+
     public static function optional(
         Validator $validator
     ): ChainedValidatorInterface&Validator;

tests/NotNullTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace ProgrammatorDev\Validator\Test;
+
+use ProgrammatorDev\Validator\Exception\NotNullException;
+use ProgrammatorDev\Validator\Rule\NotNull;
+use ProgrammatorDev\Validator\Test\Util\TestRuleFailureConditionTrait;
+use ProgrammatorDev\Validator\Test\Util\TestRuleMessageOptionTrait;
+use ProgrammatorDev\Validator\Test\Util\TestRuleSuccessConditionTrait;
+
+class NotNullTest extends AbstractTest
+{
+    use TestRuleFailureConditionTrait;
+    use TestRuleSuccessConditionTrait;
+    use TestRuleMessageOptionTrait;
+
+    public static function provideRuleFailureConditionData(): \Generator
+    {
+        $exception = NotNullException::class;
+        $message = '/The (.*) value should not be null\./';
+
+        yield 'null' => [new NotNull(), null, $exception, $message];
+    }
+
+    public static function provideRuleSuccessConditionData(): \Generator
+    {
+        yield 'int' => [new NotNull(), 1];
+        yield 'string' => [new NotNull(), 'string'];
+        yield 'bool' => [new NotNull(), true];
+        yield 'array' => [new NotNull(), []];
+    }
+
+    public static function provideRuleMessageOptionData(): \Generator
+    {
+        yield 'message' => [
+            new NotNull(
+                message: '{{ name }}'
+            ),
+            null,
+            'test'
+        ];
+    }
+}